The Crystal Singer [1982]This
novel is based on four stories originally appearing in Roger Elwood's Continuum
series [1974-1975]. The Crystal Singer is considerably expanded from these stories. The book recounts the first adventures of Killashandra Ree, a music student that is rejected as operatic solo singer late in her career, due to a burr in her voice. With her perfect pitch and disillusion going hand in hand, however. After a short lived love affair with the Crystal Singer Carrik on her native planet Fuerte, she decides to join the Heptite Guild and become a Crystal Singer herself, aiming to be the best singer ever...

Dedicated
to
"Ron and Chris Massey of the Tidmarsh Stud, and their Arabian
friends, Ben, BC, Racqui, Linda and Winnie"

France
Germany
Italy
Japan
Poland
Spain

Killashandra [1985]Killashandra Ree's life was one of catastrophic changes. She had joined the Heptite Guild to become a Crystal Singer, get rich, and forget her past. And at first everything went just as she had hoped. In one season on the deadly beautiful world of Ballybran, she had sung black crystal, grown wealthy, and met a man who made her sorrows seem unworthy of notice. But then, a year later, a devastating storm turned her claim to useless rock. In short order she was broke, she had crystal sickness so bad she thought she'd die, and the only way she could be true to the man she loved was to leave him...

Dedicated to
"my good friend
Elizabeth Moon
teacher extraordinaire"

France
Germany
Italy
Poland

Crystal Line [1992]When Killashandra Ree joined the mysterious Heptite Guild, she knew that she would be forever changed. Crystal singing brought ecstacy and pain, near-eternal life... and gradual loss of memory. But Killa had a lot of painful memories to lose. Forgetting other singer's names and faces and needing a locator to find her own apartment were only small annoyances. What she hadn't counted on was the loneliness she felt when her heart still remembered what her mind had forgotten... Fortunately, someone still cared enough to try to salvage what was left of Killashandra's mind. But she would have to learn to open herself -- to another person, and to all her unpleasant memories...

The Crystal Singer. Killashandra. Crystal Line. The Complete Chronicles of the Crystal Singers of Ballybran [1999]A trilogy that, as far as I know, has only been published in the United Kingdom by Corgi.